Skewer - How Tight
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Skewer - How Tight
I just had to pull the front wheel for the first time on carbon bike and was wondering how tight does the skewer have to be or can it be over tightened and damage the carbon frame?
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The dropouts are typically not carbon, usually aluminum.
The best advice I have seen and what I follow, is with the QR lever parallel to the ground, the nut should be tight. Then tighten the lever.
Note that if it's a mt. bike with disc brakes, the front skewer needs to be extra tight and checked periodically. If it comes loose, the braking action can pop the F wheel out of the dropouts.
The best advice I have seen and what I follow, is with the QR lever parallel to the ground, the nut should be tight. Then tighten the lever.
Note that if it's a mt. bike with disc brakes, the front skewer needs to be extra tight and checked periodically. If it comes loose, the braking action can pop the F wheel out of the dropouts.
#4
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My rule-of-thumb is that the lever should leave a slight mark in your palm when you close it. If the wheel creaks slightly when you pedal hard, open, then tighten the nut another 1/16 of a turn before re-closing the lever.
It *should* go without saying, but I've seen some experienced cyclists who did it wrong: to tighten a Q/R, you flip the lever open, then tighten the nut until there's no play in the skewer. Then, flip the lever closed, making sure it is oriented so that catching it on a stick cannot open it accidentally. More than once I've seen people use the lever as a wrench -- with open lever, spin the lever until the nut is tight. NO, NO, NO!!!
It *should* go without saying, but I've seen some experienced cyclists who did it wrong: to tighten a Q/R, you flip the lever open, then tighten the nut until there's no play in the skewer. Then, flip the lever closed, making sure it is oriented so that catching it on a stick cannot open it accidentally. More than once I've seen people use the lever as a wrench -- with open lever, spin the lever until the nut is tight. NO, NO, NO!!!
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My rule-of-thumb is that the lever should leave a slight mark in your palm when you close it. If the wheel creaks slightly when you pedal hard, open, then tighten the nut another 1/16 of a turn before re-closing the lever.
It *should* go without saying, but I've seen some experienced cyclists who did it wrong: to tighten a Q/R, you flip the lever open, then tighten the nut until there's no play in the skewer. Then, flip the lever closed, making sure it is oriented so that catching it on a stick cannot open it accidentally. More than once I've seen people use the lever as a wrench -- with open lever, spin the lever until the nut is tight. NO, NO, NO!!!
It *should* go without saying, but I've seen some experienced cyclists who did it wrong: to tighten a Q/R, you flip the lever open, then tighten the nut until there's no play in the skewer. Then, flip the lever closed, making sure it is oriented so that catching it on a stick cannot open it accidentally. More than once I've seen people use the lever as a wrench -- with open lever, spin the lever until the nut is tight. NO, NO, NO!!!
#6
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My rule-of-thumb is that the lever should leave a slight mark in your palm when you close it. If the wheel creaks slightly when you pedal hard, open, then tighten the nut another 1/16 of a turn before re-closing the lever.
It *should* go without saying, but I've seen some experienced cyclists who did it wrong: to tighten a Q/R, you flip the lever open, then tighten the nut until there's no play in the skewer. Then, flip the lever closed, making sure it is oriented so that catching it on a stick cannot open it accidentally. More than once I've seen people use the lever as a wrench -- with open lever, spin the lever until the nut is tight. NO, NO, NO!!!
It *should* go without saying, but I've seen some experienced cyclists who did it wrong: to tighten a Q/R, you flip the lever open, then tighten the nut until there's no play in the skewer. Then, flip the lever closed, making sure it is oriented so that catching it on a stick cannot open it accidentally. More than once I've seen people use the lever as a wrench -- with open lever, spin the lever until the nut is tight. NO, NO, NO!!!
#8
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the Lawyer's lips added to fork tips, helped front forks, significantly.
Disc brakes ? opposite side from the disc, so there is sufficient knuckle space, to close the QR lever.. ..
Why does it matter which side you spin as long as the wheel is seated and everything is tight when the lever it closed?
Last edited by fietsbob; 01-02-14 at 12:32 AM.
#9
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Keep in mind that when you tighten the skewer, you compress the axle and decrease bearing clearance.
What ever method you use, make sure the bearings aren't too tight/loose.
What ever method you use, make sure the bearings aren't too tight/loose.
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Slightly off topic, I recently learned that a carbon fiber seatpost bolt should be tightened with a special torque wrench to avoid cracking the seat post. Fortunately I never overtightened that bolt. As a my mechanic said, "You won't be riding for quite a while if the seatpost cracks."
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Most higher level mountain bikes now come with thru axle wheel attachments that avoid the whole quick release process and provide a more solid and secure attachment.
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Slightly off topic, I recently learned that a carbon fiber seatpost bolt should be tightened with a special torque wrench to avoid cracking the seat post. Fortunately I never overtightened that bolt. As a my mechanic said, "You won't be riding for quite a while if the seatpost cracks."
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The standard method is the hold the lever straight out, in line with the axle, then tighten the nut on the opposite end until it is "snug" - not tight, just removing all the slack in the QR. Then clamp down the lever.
With "lawyer lips," you have to adjust that nut EVERY time you install a front wheel! I've always filed off those stupid lips, but the winter fork I'm using with the front disc brake is the first fork I've ever owned where the lips have remained!
Also, really good CF forks (ENVE, for example) have CF dropouts. No problem clamping down on them. I've clamped down harder on the roof rack QR.
Luis
With "lawyer lips," you have to adjust that nut EVERY time you install a front wheel! I've always filed off those stupid lips, but the winter fork I'm using with the front disc brake is the first fork I've ever owned where the lips have remained!
Also, really good CF forks (ENVE, for example) have CF dropouts. No problem clamping down on them. I've clamped down harder on the roof rack QR.
Luis
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With "lawyer lips," you have to adjust that nut EVERY time you install a front wheel! I've always filed off those stupid lips, but the winter fork I'm using with the front disc brake is the first fork I've ever owned where the lips have remained!
Also, really good CF forks (ENVE, for example) have CF dropouts. No problem clamping down on them. I've clamped down harder on the roof rack QR.
I have been thinking of filing off the LL's for a while, a real pain to mess with and in 40 years of biking I have yet to lose a front wheel.
Mike
Luis[/QUOTE]
Also, really good CF forks (ENVE, for example) have CF dropouts. No problem clamping down on them. I've clamped down harder on the roof rack QR.
I have been thinking of filing off the LL's for a while, a real pain to mess with and in 40 years of biking I have yet to lose a front wheel.
Mike
Luis[/QUOTE]
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With "lawyer lips," you have to adjust that nut EVERY time you install a front wheel! I've always filed off those stupid lips, but the winter fork I'm using with the front disc brake is the first fork I've ever owned where the lips have remained!
Also, really good CF forks (ENVE, for example) have CF dropouts. No problem clamping down on them. I've clamped down harder on the roof rack QR.
I have been thinking of filing off the LL's for a while, a real pain to mess with and in 40 years of biking I have yet to lose a front wheel.
Mike
Luis
Also, really good CF forks (ENVE, for example) have CF dropouts. No problem clamping down on them. I've clamped down harder on the roof rack QR.
I have been thinking of filing off the LL's for a while, a real pain to mess with and in 40 years of biking I have yet to lose a front wheel.
Mike
Luis
Maybe LL are all my fault. While riding a wheelie on my Stingray clone, the front wheel fell off, eventually resulting in a faceplant. We certainly didn't sue anybody, as my parents considered it my own stupid fault. But perhaps word got out....
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Finally bought a new bike a couple months ago after 23 years and now experience the LL phenomenon. Don't like all that fiddling with the QR. Because I have to move it so much I do hold the nut and spin the lever, but I find I typically have to back off the nut a bit to get the lever to close fully, and in the desired orientation.
I also seem to prefer the horizontal / front entry rear dropout compared to my new vertical dropout, maybe it's just a case of getting used to it but I look pretty clumsy getting the rear wheel in.
scott s.
.
I also seem to prefer the horizontal / front entry rear dropout compared to my new vertical dropout, maybe it's just a case of getting used to it but I look pretty clumsy getting the rear wheel in.
scott s.
.
#18
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Sorry I didn't make myself clear. The cam action of the lever should be what's used to make the final tightening. Some people just use the lever as a short wrench, without flipping the lever, enabling them to tighten the skewer to a whopping 15 or 20 inch-pounds.
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